Higgins 2005a.

Methods	74 consecutive patients requiring endoscopy were prospectively identified by searching an endoscopy schedule (4 patients did not participate)
Data	Prior to endoscopy, UCDAI scores were calculated After each endoscopy, the endoscopist (15 total) were asked to perform scoring using the St. Mark's Index and UCDAI
Comparisons	UCDAI (clinical) SCCAI (clinical) Seo Index (clinical symptoms, hemoglobin, albumin, erthrocyte sedimentation rate)
Outcomes	Construct validity (see Table 5)
Notes	Endoscopic scoring index evaluated: St. Mark's Index Correlation was measured using Spearman's ρ and Pearson's r
Risk of bias
Item	Authors' judgement	Description
Blinding?	Unclear	Primary gastroenterologists or endoscopists scored disease activity prior to endoscopy; it is unclear whether the endoscopists were blinded to clinical information when endoscopic assessments were performed
Independent Observation?	Unclear	Not relevant (construct validity)